Large Area Search Options

I am looking for some options on large area search. Here is my predicament...I am well aware and onboard with large area searches off of a main line search rope with 20 foot tethers and all of that, but the problem is my department is still working on progressing to that standard and in the meantime, I am wondering if any of you have any creative ideas on how to accomplish this type of search in another way. We have a limited amount of large commercial structures in our first due areas, but our mutual aid city department has tons and we still have high life hazard occupancies that we need the capability to perform an effective search in. So please help in any way as I am teaching a class next week and I am basically going off some creative tactics usisng oriented search methods off of a "main line" hose line (possibly even dry just to use as an orientation marker). Thanks!

"I have no ambition in this world but one, and that is to be a fireman. The position may, in the eyes of some, appear to be a lowly one; but we who know the work which the fireman has to do believe that his is a noble calling. Our proudest moment is to save lives." ~Edward F. Croker